CAS: 71607-30-2

Pamoic acid is a disodium salt of p-aminobenzoic acid. It is an excipient that is considered safe for use in food and pharmaceuticals. Pamoic acid has been used as a preservative and an antioxidant. It prevents the oxidation of fats, oils, and other lipids by reacting with them to form stable compounds. The most common use of pamoic acid is as an anti-spasmodic drug to manage colitis, although it also has been used to treat seizures and spasticity in people with nervous system diseases. Pamoic acid can be used in combination with benzalkonium chloride as a preservative for injectable drugs such as antibiotics or chemotherapy agents. When combined with benzalkonium chloride, pamoic acid acts as a sweetener and particle size modifier.